IAG Triple Pass Street Series 42mm Radiator WRX 08-14 / STI 08-21 | IAG-ENG-2301

Product Fitment:

2008-2014 Subaru WRX

2008-2021 Subaru STI

Keep your turbocharged Subaru running cool under pressure with the IAG Street Series Triple-Pass Radiator. This high-performance all-aluminum radiator is engineered for significantly improved thermal efficiency and reliability in demanding conditions.

Unlike the OEM single-pass design, the IAG radiator uses an advanced triple-pass internal baffling system. This routes coolant through the core three separate times, increasing dwell time and improving heat transfer by 10–20% over stock, making it ideal for modified engines and aggressive driving.

Features:

• Triple-Pass Design for Maximum Efficiency
  Internal baffles route coolant through the core three times to extract more heat and ensure better temperature regulation under load.

• 42mm (1.654") Thick Aluminum Core
  Delivers optimal cooling without compromising fitment or airflow. Handles increased thermal loads from high-performance and track-driven setups.

• All-Aluminum Construction
  Lightweight, corrosion-resistant, and built to withstand high-temp conditions without cracking like plastic tanks.

• Direct OEM Fan Compatibility
  Retains OEM mounting positions for factory fans and hardware for a hassle-free install.

• Upgraded Inlet & Expansion Tank Support
  Relocated upper radiator inlet requires IAG's included 4-ply silicone hose (IAG-ENG-2304). A -6AN male fitting is pre-welded for expansion tank setups and includes a cap if unused.

• Made in the USA
  Built to the highest standards for long-lasting reliability and performance.

Included:

• IAG Street Series 42mm Triple-Pass Radiator

• IAG 4-Ply Silicone Upper Radiator Hose (IAG-ENG-2304)

• -6AN Female Cap (for optional expansion fitting)